SUBSEQUENT EVENTS (Details) (Subsequent Event [Member]) In Millions, unless otherwise specified	2 Months Ended		1 Months Ended
	Mar. 02, 2015 USD ($)	Mar. 02, 2015 Kennedy Wilson Europe Real Estate, Pllc [Member] USD ($)	Feb. 28, 2015 United Kingdom [Member] Kennedy Wilson Europe Real Estate, Pllc [Member] 180 Mixed-Used Properties [Member] USD ($) Property	Feb. 28, 2015 United Kingdom [Member] Kennedy Wilson Europe Real Estate, Pllc [Member] 180 Mixed-Used Properties [Member] GBP (£)
Subsequent Event [Line Items]
Total acquisitions	$ 825.5	$ 764.3	$ 670.0	£ 443.6
Total acquisitions under contract			$ 89.0	£ 59.4
Number of properties acquired and under contract			180	180
Number of properties under contract			17	17
Number of properties acquired			163	163